Zarakiel, The Arbitrator of Infinity is a Custom Champion in
League of Legends

Zarakiel is bounded to the Limbo. When Zarakiel enters the Limbo,
he gains damage reduction. However, when Zarakiel is on the Limbo,
his basic attacks deals less damage to enemies who are outside the
Limbo

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Zarakiel fires a dimensional bullet in the target direction that
deals magical damage to the first enemy hit. Inexistent Bullet
deals 15% less damage to enemies who are outside the Limbo, and
deals 15% more damage to enemies who are inside the Limbo.